MIL-PRF-20042E
TABLE X.
Machining details for type PR, 50-pound flanges,
standard sizes. 2/
NPS
O 1/
N
M
Minimum
Maximum
Minimum
Maximum
Inches
Inches
Inch
Inch
Inch
14.386
14.366
0.408
0.398
0.395
14
16.410
16.390
.408
.398
.395
16
18.436
18.416
.408
.398
.395
18
20.460
20.440
.408
.398
.395
20
22.526
22.506
.408
.398
.457
22
24.550
34.530
.408
.398
.457
24
26.576
26.556
.408
.398
.457
26
28.600
28.580
.408
.398
.488
28
30.626
30.606
.408
.398
.520
30
32.654
32.634
.408
.398
.551
32
34.680
34.660
.408
.398
.613
34
36.704
36.684
.408
.398
.645
36
38.730
38.710
.408
.398
.676
38
40.754
40.734
.408
.398
.707
40
1/ For tolerance see 3.6.3
2/ See figure 1.
13
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